Toshiba PORTEGE R700 - Manual (Page 168)

Problem Procedure
No sound is heard Adjust the volume.
To increase the volume click the volume up button,
and to decrease it click the volume down button.
Check the software volume settings.
Please check to see if Mute is turned to Off
Check to make sure the headphone connection is
secure.
Check within the Windows Device Manager
application to ensure the sound device is enabled
and that the device is properly working.
For further information, please refer to
"Troubleshooting in Windows" section of Windows
Help and Support.
Annoying sound is
heard In this instance you may be experiencing feedback
from either the internal microphone or an external
microphone connected to the computer - please
refer to
Sound System in chapter 4, Operating
Basics for further information.
Volume cannot be adjusted during Windows start
up or shut down.
If you are still unable to resolve the problem,
contact your reseller, dealer or service provider.
External monitor
Please also refer to chapter 3, Hardware, Utilities and Options , and to the
documentation supplied with your monitor for further information.
PORTÉGÉ R700 / Satellite R630
8-20 User's Manual